Background and Aim: The conventional procedure for removal of porcelain laminate veneers (PLVs) is time-consuming and inconvenient. The purpose of this study was to evaluate the efficacy of Er:YAG laser for debonding of PLVs. Materials and Methods: Forty-eight intact extracted human maxillary anterior teeth received discoid PLVs (24 feldspathic and 24 e-max ceramic). The PLVs had 0.7 mm thickn...

Laser bending is an advanced process in sheet metal forming in which a laser heat source is used to shape the metal sheet. In this paper, temperature distribution in a mild steel sheet metal is investigated numerically and experimentally. Laser heat source is applied through curved paths in square sheet metal parts. Finite element (FE) simulation is performed with the ABAQUS/CAE standard softwa...

Background Recently, the clinical use of low power lasers has increased, and it is said that wound healing is accelerated by their irradiation. The aim of this study was evaluation of the effect of platelet-rich plasma on proliferation and differentiation of human dental pulp stem cells with or without Ga-Al-As laser. Methods: In this experimental study, human lower third molar dental pulp c...

Oil spills can be disastrous to any ecosystem. Bioremediation through bioaugmentation (addition of oil-degrading bacteria) and biostimulation (addition of nutrients N&P) options can be a promising strategy for combating oil spills following first response actions. However, bioaugmentation is one of the most controversial issues of bioremediation since nutrient addition alone has a greater effec...

s and presentations Jardine, P.M., T.L. Mehlhorn, I.L. Larsen. 2001. Quantifying time-dependent physical and chemical processes that influence the migration of chelated radionuclides in fractured shale. Fractured Rock 2001. March 26-28, 2001, Toronto, Ontario, Canada. Jardine, P.M., M.A. Mayes, T.L. Mehlhorn, and S.C. Brooks. 2001. Reactive transport of chelated radionuclides through weathered ...

introduction: providing desirable smile is one of the main concerns in cosmetic dentistry. hyperpigmentation is one of the esthetic concerns especially in gummy smile patients. lasers with different wavelength are used for oral surgery including carbon dioxide laser (co2), neodymium-doped yttrium aluminium garnet (nd:yag), erbium family and diode laser. in this case, all esthetic procedures inc...